Question

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Answer 1

Step-by-step explanation:

(a) 90=729

100=729

___ ×100

90

=810

(b) The cost price of the toy is 320

Step-by-step explanation:

Let the Cp be x

Loss% = 20 %

So, SP =CP - Loss

SP = x- \frac{20}{100}xx−

100

20

x

When is is sold at profit of 5%

Profit% = 5%

So, SP =CP + Profit

SP = x+ \frac{5}{100}xx+

100

5

x

SP = x+ \frac{5}{100}xx+

100

5

x

Now we are given that Had he sold it for rupees 80 more, He would have made a profit of 5% on it.

So, (x+ \frac{5}{100}x)-(x- \frac{20}{100}x)=80(x+

100

5

x)−(x−

100

20

x)=80

x=320x=320

Hence the cost price of the toy is 320

answer in picture is of (c)

(d) If two successive discounts are given on the school bag and sold at 900 rs., then its marked price is Rs. 1250

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